Oil burner



Aplrfl 29, 1924. 1,492,243

L. R. CHURCHILL OIL BURNER Original Filed Sept. 17. 1921 2 Sheets-Sheet 1 April 29 1924. 15,492,243

| R. CHURCHILL OILBURNER Original Filed Sept. 17. 1921 2 Sheets-$heet 2 WITNESS:

ATTO RN EY INVENTOR Patented Apr. 29, 1924.

STATES PATENT OFFICE.

LOREN R. CHURCHILL, F LANCASTER, PENNSYLVANIA, ASSIGNOR TO SIMPLIS OIL HEATER COMPANY, OF LANCASTER, PENNSYLVANIA. A CORPORATION OF DELA- OIL BURNER.

Application filed September 17, 1921, Serial'No. 501,262. Renewed March 24, 1924.

To all whom it may concern v Be it known that I, LOREN R. CH RCHILL, a citizen of the United States, residing at Lancaster, in the county of Lancaster and State of Pennsylvania, have invented new and useful Improvements in Oil .Burners, of which the following is a specification.

This invention relates to an oil burner for furnaces and the like, the general object of the invention being to provide a burner which will burn low grade fuel with great efficiency and produce a maximum amount of heat.

Another object of the invention is to provide means for heating the fuel before it reaches the combustion chamber and while it is being mixed with air.

A further object of the invention is to provide means for regulating the amount 0 air and fuel delivered.

A. further object of the invention is to provide a pilot light for igniting the combustible mixture in the combustion chamber and also to initially heat the mixing chamher for the fuel and air.

This invention also consists in certain other features of construction and in the combination and arrangement of the several arts, to be hereinafter fully described, illustrated in the accompanying drawin and specifically pointed out in the appen ed claim.

In the describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which:-

Figure 1' is an elevation of the invention.

Figure 2 is a plan view thereof.

Figure 3 is an enlarged sectional view of the burner parts.

Figure 4 is a horizontal sectional view of such parts.

Figure 5 is an enlarged sectional view of thepilot burner.

In these views 1 indicates a supporting stand which supports the blower 2, its motor 3,.the rheostat 4 for the motor and the controller 5 which controls the delivery of fuel to the burner and the circuit of the motor. This controller may be of any desired type, such as the various types now on the market.

The combustion chamber is shown at 6 and is adapted to be placed in the fire-pot the closed end of the nozzle.

of the furnace. This chamber has its top open and a nozzle 7 is located in the chamber at one end thereof. A pipe 8 connects this nozzle withthe blower and a pipe 9 connects the nozzle with a fuel supply. As shown, the pipes 8 and 9 do not projectinto the nozzle ut have their ends flush with The nozzle is so formed that it provides a mixin chamber for the air and oil so that t ey are thoroughly mixed before being ejected into the combustion chamber. The mixture is ignited in the combustion chamber by means of the pilot burner which is composed of the supply tube 10 having the burner orifice 11,

therein and the tube 12 which encloses the end of the sup ly tube and the orifice therein and this tube l2 has screw threaded engagement with a hole formed in the bottom of the combustion chamber. The, upper open end of this tube is located immediately under the outlet end of the nozzle so that the pilot flame will-not only ignite the combustible mixture flowing from the nozzle but also acts to heat the nozzle initially so that the combustible mixture is heated, before being ignited.

The supply pipe 9 is provided with a manually operated valve 13 and with a valve operating shaft 16 of the controller. This shaft isalso connected by links 17 with a switch 18 in the circuit of the motor. The

device 5 is controlled by one or more thermostatic means placed in the room or rooms of the building to be heated so that the temperature can be held automatically at any desired degree. As such means are well known in the art they are not shown or described. As will be seen the device 5 will control the flow of oil to the burner by means of the valve 14 and the flow of air bymeans of the electric switch '18 in the cir cuit of themotor. The motor 3 is -a variable speed one and the s eed thereof may be regulated by means of t e rheostat 5.

, vInforder to prevent floodin of the burner by fuel if the pilot light s ould be accidentally extin ished I provide-a pipe 19 which will lea the oil from the combustion chamber into a receptacle 20 which is suspended by a chain 21 which passes over a.

14 which is connected by links 15 with the suitable guiding pulley and 'is connected controller. Thus if the oil should fail to be ignited in the combustion chamber for any reason the surplu oil will flow thrt ugh pipe 19 into the rece tacle 20 until the weight thereof is suflicient to pull the switch 22 into inoperative position and thus render the controller inactive and so close the valve 14 and open the switch 18. This will shut off the supply of oil and air to the burner.

By heating the nozzle or mixing chamber the oil is heated before being ignited so that an oil of low grade can be used. The pilot light acts as an initial heating means for the nozzle so that the combustible mixture will be heated at all times before reaching thecombustion chamber. By having the ends of the supply pipes flush with the rear wall of the nozzle there is no danger of the mixing chamber being fouled with carbon as it is self-cleaning.

It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.

v What I claim is 2-- A burner of the class described comprising a burner bowl, 2. tapering nozzle having its wide end connected to one wall thereof, a fuel pipe connected with said wide end;

an air pipe connected with said wide end, a pilot burner passing through the bottom of the bowl and arranged to heat the nozzle and ignite the mixture passing therefrom, a fan connected with the air pipe, an oil supply connected with the oil pipe, an electric motor operating the fan, an electric circuit for the motor including a switch, a valve in the fuel pipe, a controller connected with the valve and switch, a receptacle, means for connecting the same with the controller to render the same inactive when the receptacle moves downwardly and a pipe for leading surplus fuel from the bowl into the receptacle.

In testimony whereof I aflix my signature.

LOREN R; CHURCHILL. 

